Identifying Mitosis Roles in Diagrams

Steps:

• Recall mitosis roles: cell growth, tissue repair, and asexual reproduction in single-celled organisms.
• Examine diagram 1: shows cell division for growth in multicellular organisms.
• Examine diagram 2: depicts tissue repair via cell replacement.
• Examine diagram 4: illustrates asexual reproduction in unicellular organisms.
• Exclude diagram 3: represents meiosis for gamete formation, not mitosis.

Why A is correct:

• Option A includes diagrams 1, 2, and 4, matching mitosis definition as somatic cell division for growth, repair, and asexual reproduction.

Why the others are wrong:

• B includes diagram 3 (meiosis), excluding valid mitosis role in diagram 4.
• C omits diagram 4, missing asexual reproduction role.
• D excludes diagrams 1 and 2, ignoring growth and repair.

Final answer: A